I know an herb called "Kava Kava" can create the sensation that you describe.
You may want to ask your physician to check your calcium level. There is a condition called, "tetany" that can cause tingling lips and/or other symptoms.
Thanks for the information. I don't take Kava Kava but I will look up the other thing you mentioned. It's such a weird feeling and I don't think it's always there. It' kind of feels like my lower lip is swollen on the inside and tender. So weird---but thanks again.